JP2005334193A - Suture needle - Google Patents

Suture needle Download PDF

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Publication number
JP2005334193A
JP2005334193A JP2004155618A JP2004155618A JP2005334193A JP 2005334193 A JP2005334193 A JP 2005334193A JP 2004155618 A JP2004155618 A JP 2004155618A JP 2004155618 A JP2004155618 A JP 2004155618A JP 2005334193 A JP2005334193 A JP 2005334193A
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Prior art keywords
needle
tip
suture
blasting
suture needle
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JP2005334193A5 (en
JP4243220B2 (en
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Ikuo Akiyama
郁夫 秋山
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AKIYAMA SEISAKUSHO KK
Akiyama Manufacturing Co Ltd
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AKIYAMA SEISAKUSHO KK
Akiyama Manufacturing Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526—Methods of manufacturing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • A61B2017/06071—Needles, e.g. needle tip configurations with an abrupt angle formed between two adjacent sections

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suture needle capable of improving piercing property by reducing piercing resistance on piercing the biological tissue. <P>SOLUTION: The suture needle has a needle tip 3 formed on one end of a trunk 2 of a needle body 1 and a needle base 4 having a thread attaching section 7 formed on the other end of the trunk 2. The needle tip 3 of the needle body 1 is provided with microscopic irregularities 5 formed by blasting. With such a configuration, when the suture needle is pierced into the biological tissue, a microscopic gap is formed between the irregularities 5 and the tissue. The contact area between the surface of the needle and the biological tissue is thus decreased to reduce the piercing resistance and to improve the piercing property. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は医療用の縫合針に関するものである。   The present invention relates to a medical suture needle.

医療用の縫合針は、その用途等に応じて多様の種類がある。その代表的なものとして、例えば鈍針や三角その他の角針、或いは丸針等が挙げられる。
鈍針は、例えば肝臓等の縫合用等に用いられ、針先部の先端が鈍点（鈍い点）に形成されている。角針は、例えば、皮膚、筋肉その他の生体組織の縫合用として広く用いられ、一般に針先部は所望の稜線に切刃を付与した三角形その他の多角形断面に形成されている。 There are various types of medical suturing needles depending on the application. Typical examples include a blunt needle, a triangular or other square needle, or a round needle.
The blunt needle is used, for example, for suturing the liver or the like, and the tip of the needle tip is formed at a blunt point (blunt point). Square needles are widely used, for example, for suturing skin, muscle, and other living tissues, and generally the tip of a needle is formed in a triangular or other polygonal cross section with a cutting edge on a desired ridgeline.

丸針は、例えば血管や軟組織等の縫合用等に用いられ、針本体の胴部の一端側に円錐状のテーパ部で形成された針先部を備えている。前記テーパ部及び胴部の断面形状は、通常の場合は円形状が多いが、長円形状（楕円形状）や鼓形状等に形成したものもある。   The round needle is used, for example, for suturing blood vessels, soft tissues, and the like, and includes a needle tip portion formed by a conical tapered portion on one end side of the body portion of the needle body. In general, the taper portion and the trunk portion have a circular shape in many cases, but may have an elliptical shape (elliptical shape), a drum shape, or the like.

医療用の縫合針は上述したように多様の種類のものがある。これらの縫合針は、生体組織に刺入する際の刺通抵抗をできるだけ小にして患者の苦痛を少なく構成することが好ましい。刺通性がよくなることにより、縫合操作も良好になる。   As described above, there are various types of medical suturing needles. These suture needles are preferably configured so as to reduce the patient's pain by minimizing the piercing resistance when inserting into a living tissue. Since the piercing property is improved, the suturing operation is also improved.

従来は、針の表面を鏡面に仕上げることで刺通抵抗を減少させるようにしてきた。即ち、縫合針の製造に当たり、その仕上げの表面処理として、バフ研磨仕上法、電解研磨仕上法、或いは化学研磨仕上法などを行うことにより鏡面を得るようにしていた。   Conventionally, the piercing resistance has been reduced by finishing the surface of the needle into a mirror surface. That is, in manufacturing a suture needle, a mirror surface is obtained by performing a buffing finishing method, an electrolytic polishing finishing method, a chemical polishing finishing method, or the like as a finishing surface treatment.

バフ研磨は、微細な砥粒を付けたフェルトや木綿布などを回転させ、針材を押し当てて研磨するもので、針本体の針先部や胴部を鏡面状に仕上げることができる。
電解研磨は、化学液内に針を浸漬すると共に針に電流を通して電解させ、針の表面を溶解させて鏡面状に仕上げるものである。また、化学研磨は電解研磨のように電流を流さないで、化学液内に針を浸漬して針の表面を溶解し、鏡面状に仕上げるものである。 Buffing is a process in which felt or cotton cloth with fine abrasive grains is rotated and pressed against the needle material for polishing. The needle tip and body of the needle body can be finished in a mirror surface.
In the electropolishing, a needle is immersed in a chemical solution and electrolyzed by passing an electric current through the needle to dissolve the surface of the needle and finish it into a mirror surface. Further, chemical polishing does not pass an electric current unlike electropolishing, but immerses a needle in a chemical solution to dissolve the surface of the needle and finishes it in a mirror surface.

上記したバフ研磨、電解研磨、化学研磨によって処理することにより、肉眼で見る限りにおいては針の表面を鏡面状に仕上げることができる。しかし、上記した方法により仕上げ研磨処理した針においても刺通抵抗を満足すべき数値に低減することはできなかった。その理由は、針の表面を鏡面状に形成すると、針の刺入時に針の表面と生体組織との接触面積が大きくなって摩擦抵抗が増大するためであると考えられる。   By performing the above-described buffing, electrolytic polishing, and chemical polishing, the surface of the needle can be finished into a mirror surface as far as the naked eye can see. However, even in the needles that have been subjected to finish polishing by the above-described method, the piercing resistance could not be reduced to a satisfactory value. The reason for this is considered to be that if the surface of the needle is formed into a mirror surface, the contact area between the surface of the needle and the living tissue increases when the needle is inserted, and the frictional resistance increases.

そこで、刺通抵抗を減少させる方法として、上記した研磨仕上げした針の表面にシリコンをコーティングする方法が提案されている。このシリコンコーティング法によれば、刺通抵抗を減少させることができる。しかし、上記した方法で仕上げ研磨した針にシリコンをコーティングした場合、数回の使用によりシリコンのコーティング層が剥げ落ち、その効果がなくなってしまう問題があった。   Therefore, as a method of reducing the piercing resistance, a method of coating silicon on the surface of the above-described polished needle has been proposed. According to this silicon coating method, the piercing resistance can be reduced. However, when silicon is coated on the needle that has been finish-polished by the above-described method, there has been a problem that the silicon coating layer is peeled off after several uses and the effect is lost.

上記問題の解決案として、針本体の針先部に、軸方向に形成した研削加工による凹凸条面を施した縫合針（以下、「先行縫合針」という）が提案されている（例えば、特許文献１参照）。この先行縫合針は、針を生体組織に刺入すると、凹凸条面と生体組織との間に微細な隙間が形成されるので、針の表面と生体組織との接触面積が減少する。したがって、先行縫合針によれば、上述したバフ研磨、電解研磨、或いは化学研磨によって仕上げした縫合針に比べて刺通抵抗（摩擦抵抗）を軽減することができると思われる。
特開平１１−７０１１３号公報 As a solution to the above problem, there has been proposed a suture needle (hereinafter referred to as a “preceding suture needle”) in which the needle tip portion of the needle body is provided with an uneven surface formed by grinding in the axial direction (hereinafter referred to as “preceding suture needle”) Reference 1). When this needle is inserted into a living tissue, a fine gap is formed between the concave and convex surface and the living tissue, so that the contact area between the surface of the needle and the living tissue is reduced. Therefore, it seems that according to the preceding suturing needle, the piercing resistance (friction resistance) can be reduced as compared with the suturing needle finished by the buffing, electropolishing, or chemical polishing described above.
JP-A-11-70113

本発明は先行縫合針とは発想を異にした技術により、生体組織に刺入する際の刺通抵抗を減少させて刺通性を向上することができる新規の縫合針を提供することを目的とするものである。   An object of the present invention is to provide a novel suture needle capable of improving piercing property by reducing puncture resistance when piercing into a living tissue by a technique different in concept from the preceding suture needle. It is what.

上記目的を達成するため、本発明は、針本体の胴部の一端側に形成された針先部と、前記胴部の他端側に形成され、糸取付部を有する針基部とを備えた縫合針であって、前記針本体の少なくとも前記針先部の少なくとも一部に、ブラスト加工により形成された凹凸部を有してなることを特徴とする。   In order to achieve the above object, the present invention includes a needle tip portion formed on one end side of a body portion of a needle body, and a needle base portion formed on the other end side of the body portion and having a thread attachment portion. The suture needle is characterized in that at least a part of at least a part of the needle tip portion of the needle body has an uneven portion formed by blasting.

本発明の縫合針は、その種類や形状等に関係なく、医療用ないし外科用に使用する全ての縫合針を含む。
例えば、一例として次のような縫合針を挙げることができる。針先部がテーパ部で形成された丸針。針先部の先端が鈍点で形成された鈍針。針先部の先端に刺入尖端を備えた縫合針。針先部にバフ研磨、電解研磨、或いは化学研磨によって仕上げした先端部を備えた縫合針。針先部に角錐により形成した先端部を備えた縫合針。針先部が切刃を有する三角形その他の多角形断面に形成された角針。 The suturing needle of the present invention includes all suturing needles used for medical or surgical purposes regardless of the type or shape thereof.
For example, the following suture needles can be mentioned as an example. A round needle with a needle tip formed by a taper. A blunt needle with a blunt point at the tip of the needle tip. A suturing needle having a needle tip at the tip of the needle tip. A suturing needle having a tip end finished by buffing, electrolytic polishing, or chemical polishing at the needle tip. A suturing needle having a tip formed by a pyramid at the needle tip. A square needle formed in a triangular or other polygonal cross section in which the needle tip has a cutting edge.

また、針の外観の形状としては、例えば、一例として次のようなタイプの縫合針を挙げることができる。弯曲針や直針。針本体の全長の約半分（針先部側）のみを弯曲した縫合針（先曲針）。ジモン氏や兎唇用縫合針のようにフック状に弯曲した縫合針。   Examples of the shape of the appearance of the needle include the following types of suture needles as an example. Folding needle or straight needle. A suture needle (curved needle) in which only about half of the entire length of the needle body (needle tip side) is bent. A suture needle bent like a hook like Jimmon or the labial suture needle.

さらにまた、本発明においては、針の所望部における表面にシリコンをコーティングする構成を採用することもできる。   Furthermore, in this invention, the structure which coats the silicon | silicone on the surface in the desired part of a needle | hook is also employable.

本発明によれば、針を生体組織に刺入すると、ブラスト加工により形成された凹凸部と生体組織との間に微細な間隙部が形成されるので、針の表面と生体組織との接触面積が減少する。したがって、針を生体組織に刺入する際の刺通抵抗を減少させて刺通性を向上することができる。   According to the present invention, when the needle is inserted into the living tissue, a fine gap is formed between the concavo-convex portion formed by blasting and the living tissue, so that the contact area between the surface of the needle and the living tissue Decrease. Therefore, the piercing resistance can be reduced by reducing the piercing resistance when the needle is inserted into the living tissue.

以下、図面を参照して本発明の実施の形態の一例を説明する。   Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

図１は本発明の縫合針の一実施の形態を示すものであって、同図（ａ）は側面図、同図（ｂ）は針本体を直線状に伸展した状態の一部を拡大して示す平面図、同図（ｃ）は同図（ｂ）のＡ−Ａ線拡大断面図、図２は図１の縫合針におけるブラスト加工によって形成された凹凸部を説明するために一部を拡大して示す説明図である。   FIG. 1 shows an embodiment of the suture needle of the present invention. FIG. 1 (a) is a side view, and FIG. 1 (b) is an enlarged view of a part of the needle body extended linearly. FIG. 2C is an enlarged cross-sectional view taken along the line AA of FIG. 2B, and FIG. 2 is a partial view for explaining the concavo-convex portion formed by blasting in the suture needle of FIG. It is explanatory drawing expanded and shown.

上記図１〜図２において、この実施の形態（実施の形態１）の縫合針は丸針で構成され、針本体１の胴部２の一端側に形成された針先部３と、胴部２の他端側に形成された針基部４とを備え、針本体１の表面の所定の部位には、ブラスト加工により形成された凹凸部５が施されている。   1 to 2, the suturing needle of this embodiment (Embodiment 1) is a round needle, and a needle tip 3 formed on one end side of the body 2 of the needle body 1 and a body 2 and a needle base portion 4 formed on the other end side, and a predetermined portion on the surface of the needle body 1 is provided with an uneven portion 5 formed by blasting.

針本体１は、その素材として、例えばオーステナイト系ステンレス（例えばＳＵＳ３０４）その他のステンレス鋼等の丸棒状の針材１１（図３参照）を採用できる。針本体１の太さ（主に胴部２の径）及び長さ（針本体１を直線状に伸展した状態における一端から他端までの寸法）は、縫合する部位、用途、目的等に応じて任意に設定される。   The needle body 1 can employ, for example, a round bar-shaped needle material 11 (see FIG. 3) such as austenitic stainless steel (for example, SUS304) or other stainless steel. The thickness of the needle body 1 (mainly the diameter of the body 2) and the length (dimensions from one end to the other end when the needle body 1 is linearly extended) depend on the site to be sutured, application, purpose, etc. Is set arbitrarily.

実施の形態１の縫合針は針本体１を全体的に円弧状に弯曲した弯曲針で構成されている。弯曲針の種類としては、半円形状、即ち、円周の約１／２の長さに形成したもの（一般に強弯針と称されている）と、円周の約３／８の長さの円弧状に形成したもの（一般に弱弯針と称されている）等がある。実施の形態１では弱弯針で構成した縫合針が開示されている。   The suturing needle according to the first embodiment is composed of a curved needle that is obtained by bending the needle body 1 in a generally arcuate shape. The types of curved needles are semicircular, that is, those formed to have a length of about 1/2 of the circumference (generally referred to as a strong needle), and the length of about 3/8 of the circumference. In the shape of an arc (generally referred to as a weak needle). In the first embodiment, a suture needle configured with a weak needle is disclosed.

実施の形態１の縫合針は上述したとおり丸針で構成されている。丸針の場合、胴部２の断面形状は、通常の場合には円形状が多い（図示では円形状のものが開示されている）が、長円形状（楕円形状）や鼓形状等に形成することもできる。これらの形状は所望に応じて任意に決定する。   As described above, the suturing needle of the first embodiment is constituted by a round needle. In the case of a round needle, the cross-sectional shape of the body 2 is usually circular (in the drawing, a circular shape is disclosed), but is formed in an oval shape (elliptical shape), a drum shape, or the like. You can also These shapes are arbitrarily determined as desired.

針先部３は先端側方向に次第に先細（直径又は断面積が縮小）になるテーパ部１２で構成され、テーパ部１２の先端１３は尖鋭に形成した刺入尖端で構成されている。なお、鈍針の場合には、テーパ部１２の先端を尖鋭に形成しないで鈍点状に形成する。ここで、前記テーパ部１２とは、前記したように胴部２から先端１３に行くにしたがって直径又は断面積が次第に縮小する形状一般を意味し、断面積の変化が直線状なものは勿論、曲線状なものも含まれる。
前記テーパ部１２の断面形状は、一般的には円形状に形成されているが、長円形状（楕円形状）に形成することもできる。 The needle tip portion 3 is configured by a tapered portion 12 that gradually tapers (diameter or cross-sectional area is reduced) in the distal direction, and the distal end 13 of the tapered portion 12 is configured by a sharpened insertion tip. In the case of a blunt needle, the tip of the taper portion 12 is formed as a blunt spot without being sharply formed. Here, the taper part 12 means a general shape in which the diameter or the cross-sectional area gradually decreases as it goes from the body part 2 to the tip 13 as described above, and of course, the change in the cross-sectional area is linear, Curved ones are also included.
The cross-sectional shape of the taper portion 12 is generally formed in a circular shape, but may be formed in an oval shape (elliptical shape).

針本体１の針基部４には、縫合糸６を取付ける糸取付部７が設けてある。実施の形態１では糸取付部７として、針基部４の端部に針本体１の軸方向へ向けて設けた糸取付穴７ａで形成した例が開示されているが、前記糸取付部７は弾機穴又は弾機孔（バネ穴ともいう）、或いはナミ穴又はナミ孔（普通穴ともいう）その他任意の構成に変更可能である。
実施の形態１の縫合針は、縫合糸の端部を前記穴７ａに挿入し、かしめ着等により固着して糸６の端部に取付けて使用される。なお、糸取付部７を弾性穴で構成した場合には、糸６を弾機穴に係入して取付ける。また、ナミ穴で構成した場合には、糸６をナミ穴に挿入して取付ける。 The needle base portion 4 of the needle body 1 is provided with a thread attachment portion 7 for attaching the suture thread 6. In the first embodiment, an example in which the thread attaching portion 7 is formed with a thread attaching hole 7a provided in the end portion of the needle base portion 4 in the axial direction of the needle body 1 is disclosed. It can be changed to an arbitrary configuration such as a bullet hole or a bullet hole (also referred to as a spring hole), a narrow hole or a narrow hole (also referred to as a normal hole), or the like.
The suture needle of the first embodiment is used by inserting the end portion of the suture thread into the hole 7a and fixing it by caulking or the like and attaching it to the end portion of the thread 6. In addition, when the thread attachment portion 7 is configured by an elastic hole, the thread 6 is engaged with and attached to the bullet hole. Further, in the case where it is configured with a slot, the thread 6 is inserted into the slot and attached.

前記ブラスト加工により形成された凹凸部５は、針本体１の少なくとも針先部３の少なくとも一部に施されている。実施の形態１では、針先部３の先端１３から胴部２の針基部４の近くにわたり、略全体的に前記凹凸部５を施した例が開示されている。   The concavo-convex portion 5 formed by the blasting is applied to at least a part of the needle tip portion 3 of the needle body 1. In the first embodiment, an example in which the concave and convex portion 5 is substantially entirely provided from the tip 13 of the needle tip portion 3 to the vicinity of the needle base portion 4 of the trunk portion 2 is disclosed.

前記凹凸部５は、例えば固体粒子（噴射材）を高圧空気を用いて適当な速度で噴射して針本体１の所定の部位に衝突させることにより形成される。即ち、固体粒子を噴射し針本体１の表面に衝突することによって、衝突部位には多数の微小な凹部５ａが梨地状に形成され、各凹部５ａ間は凸部５ｂになる。これにより、針本体１の表面には、ブラスト加工により形成された凹凸部５が形成される。   The concavo-convex portion 5 is formed by, for example, injecting solid particles (injection material) at an appropriate speed using high-pressure air to collide with a predetermined portion of the needle body 1. That is, by injecting solid particles and colliding with the surface of the needle body 1, a large number of minute recesses 5a are formed in a matte shape at the collision site, and the spaces between the recesses 5a become the protrusions 5b. Thereby, the uneven part 5 formed by blasting is formed on the surface of the needle body 1.

前記固体粒子は、例えばガラス材、セラミック材、或いはスチール材等で任意の形状、例えば球形状その他の形状に形成したものを採用できる。実施の形態１では球形状に形成した個体粒子を採用している。これにより、固体粒子の衝突面には球面状の微小な凹部５ａが形成されている。
前記凹部５ａの大きさ及び深さは、例えば直径約３０〜約８０μｍ、深さ約２０〜約４０μｍ程度に形成することができる。但し、上記範囲内に限定するものではない。なお、前記凹部５ａの大きさ及び深さは、固体粒子の粒子の径や噴射速度等によって任意に調整することができる。
前記固体粒子の大きさは、ブラスト加工によって形成する前記凹部５ａのサイズ等に対応して決定するもので、例えば、粒径（直径）約４０〜約１００μｍ程度に形成したものを採用することができる。但し、上記範囲内に限定するものではない。
また、固体粒子を噴射する噴射速度は、例えば固体粒子の材質や大きさ等によって適当に決定するものであるが、例えば、約３０ｍ〜約８０ｍ／ｓｅｃ程度に設定することができる。但し、上記範囲内に限定するものではない。 As the solid particles, for example, a glass material, a ceramic material, a steel material, or the like formed in an arbitrary shape, for example, a spherical shape or other shapes can be adopted. In the first embodiment, solid particles formed in a spherical shape are employed. Thereby, spherical concave portions 5a are formed on the collision surface of the solid particles.
The size and depth of the recess 5a can be formed to have a diameter of about 30 to about 80 μm and a depth of about 20 to about 40 μm, for example. However, the present invention is not limited to the above range. Note that the size and depth of the concave portion 5a can be arbitrarily adjusted by the particle diameter, injection speed, and the like of the solid particles.
The size of the solid particles is determined in accordance with the size of the concave portion 5a formed by blasting, and for example, a particle size (diameter) of about 40 to about 100 μm may be adopted. it can. However, the present invention is not limited to the above range.
The injection speed for injecting the solid particles is appropriately determined according to, for example, the material and size of the solid particles, and can be set to about 30 m to about 80 m / sec, for example. However, the present invention is not limited to the above range.

上記のように構成した縫合針は、これを生体組織に刺入すると、ブラスト加工により形成された凹凸部５と生体組織との間に微小な間隙部が形成されるので、針の表面と生体組織との接触面積が減少する。したがって、針を生体組織に刺入する際の刺通抵抗を減少させて刺通性を良好にすることができる。
また、針本体１の凹凸部５を形成した部位はブラスト加工による固体粒子の噴射衝突により硬化されて強化される効果も奏する。 When the suture needle configured as described above is inserted into a living tissue, a minute gap is formed between the concavo-convex portion 5 formed by blasting and the living tissue. The contact area with the tissue is reduced. Therefore, it is possible to improve the piercing property by reducing the piercing resistance when the needle is inserted into the living tissue.
Moreover, the site | part which formed the uneven | corrugated | grooved part 5 of the needle | hook main body 1 also has the effect of hardening | curing and strengthening by the injection collision of the solid particle by blasting.

実施の形態１の縫合針は、針本体１の少なくとも針先部３、或いは針先部を含めて針本体１の全体にシリコーンでコーティング処理し、シリコーンのコーティング層８が施されている（図２参照）。シリコーンのコーティングは、例えばシリコーン溶液の中に針を浸漬する方法やシリコーン溶液を刷毛で塗布する方法等により行える。
実施の形態１のように、シリコーンでコーティング処理すると、針の生体組織への刺通性が一層良好になる。前記シリコーンの層８は凹部５ａ内に入り込んで固定されるので、保持性がよくなる。そのため、生体組織に繰返し刺入してもシリコーン効果を維持させることができる。なお、針本体１をシリコーンでコーティング処理することについては、後述する各実施の形態においても同様である。 In the suturing needle of the first embodiment, at least the needle tip portion 3 of the needle body 1 or the entire needle body 1 including the needle tip portion is coated with silicone, and a silicone coating layer 8 is applied (FIG. 2). Silicone coating can be performed by, for example, a method of immersing a needle in a silicone solution or a method of applying a silicone solution with a brush.
When the coating treatment is performed with silicone as in the first embodiment, the needle can be more easily pierced into the living tissue. Since the silicone layer 8 enters and is fixed in the recess 5a, the retainability is improved. Therefore, the silicone effect can be maintained even when repeatedly inserted into a living tissue. The needle body 1 is coated with silicone in the same manner in each embodiment described later.

次に実施の形態１の縫合針の製造方法の一例について図３を参照して説明する。図３（ａ）は針材を示す斜視図、同図（ｂ）は針材の一端に糸取付部７（糸取付穴７ａ）を、また、他端側に針先部３（テーパ部１２）を形成する工程を示す説明図、同図（ｃ）は針本体にブラスト加工により形成された凹凸部５を形成する工程を示す説明図である。   Next, an example of the manufacturing method of the suture needle of Embodiment 1 will be described with reference to FIG. 3A is a perspective view showing the needle material, and FIG. 3B is a needle attachment portion 7 (thread attachment hole 7a) at one end of the needle material, and a needle tip portion 3 (taper portion 12) at the other end side. (C) is an explanatory view showing the step of forming the concavo-convex portion 5 formed by blasting on the needle body.

縫合針の針材１１は、図３（ａ）に示すように、例えばオーステナイト系ステンレス、その他のステンレス鋼等の丸棒状に形成したものを採用し、所定の長さに切断されている。図３（ｂ）に示すように、針材１１の一端側に縫合糸６を取付ける糸取付部７を有する針基部４を形成する。この実施の形態１の糸取付部７は針材１１の端部に針材１１の軸方向に向けて設けた糸取付穴７ａで構成されている。
また、針材１１の他端側を略円錐形状に研削し、針材１１の他端側に適当な長さのテーパ部１２で構成した針先部３を形成する。 As shown in FIG. 3A, the needle material 11 of the suture needle employs, for example, a material formed in a round bar shape such as austenitic stainless steel or other stainless steel, and is cut to a predetermined length. As shown in FIG. 3B, the needle base portion 4 having the thread attachment portion 7 for attaching the suture thread 6 to one end side of the needle material 11 is formed. The thread attaching portion 7 according to the first embodiment is composed of a thread attaching hole 7 a provided at the end of the needle material 11 in the axial direction of the needle material 11.
Further, the other end side of the needle material 11 is ground into a substantially conical shape, and the needle tip portion 3 composed of a taper portion 12 having an appropriate length is formed on the other end side of the needle material 11.

上記工程により得られた加工品を便宜上「中途加工針９」という。この加工針９を図３（ｃ）に示すように、ブラスト処理し、前記加工針９の針先部３の先端１３から針基部４の近くまでの全域にわたりブラスト加工により形成した微小な無数の（梨地状の）凹凸部５を施す。ブラスト加工の具体例については追って説明する。上記工程により得られた加工品を便宜上「ブラスト加工針１０」という。   The processed product obtained by the above process is referred to as “intermediate processing needle 9” for convenience. As shown in FIG. 3 (c), the processing needle 9 is blasted, and the infinitesimal number formed by blasting over the entire region from the tip 13 of the needle tip 3 of the processing needle 9 to the vicinity of the needle base 4. The uneven part 5 (satin texture) is applied. A specific example of blasting will be described later. The processed product obtained by the above process is referred to as “blasting needle 10” for convenience.

次いで、ブラスト加工針１０の針先部３（テーパ部１２）の先端１３を研削或いは研磨等により尖鋭に形成し、刺入尖端を形成する。そして、ブラスト加工針１０を円弧状に弯曲し、シリコーンコーティング等の処理工程を含んで弯曲針（弯曲縫合針）を得る。この場合において、シリコーンコーティングを省略することもできる。
なお、鈍針の場合には、テーパ部１２の先端を尖鋭に形成しないで、鈍点状に形成する。また、直針の場合には前記した弯曲処理工程を省略して製品を得る。 Next, the tip 13 of the needle tip portion 3 (tapered portion 12) of the blasting needle 10 is sharply formed by grinding or polishing to form an insertion point. Then, the blasting needle 10 is bent into an arc shape, and a bending needle (curved suture needle) is obtained including processing steps such as silicone coating. In this case, the silicone coating can be omitted.
In the case of a blunt needle, the tip of the taper portion 12 is not formed sharply, but is formed in a blunt shape. Moreover, in the case of a straight needle, a product is obtained by omitting the bending process described above.

次に縫合針のブラスト処理加工の一例について図４〜図７を参照して説明する。図４は本発明に使用するブラスト加工装置の全体構成の概要を示す平面側から見た説明図、図５は同上装置を側面側から見た説明図、図６は図５のＢ−Ｂ線断面図、図７は同上装置に設けた抜き取り用ロールの部分を拡大して示す説明図である。   Next, an example of the blasting process of the suture needle will be described with reference to FIGS. 4 is an explanatory view seen from the plane side showing the outline of the overall configuration of the blasting apparatus used in the present invention, FIG. 5 is an explanatory view seen from the side face side of the same apparatus, and FIG. 6 is a BB line in FIG. FIG. 7 is a cross-sectional view, and FIG. 7 is an explanatory view showing, in an enlarged manner, a portion of a drawing roll provided in the apparatus.

上記図４〜図７において、このブラスト加工装置３０は、噴射加工室３１と、コンベア装置３２と、噴射部３３と、コンプレッサー３４と、圧力調整器３５と、固体粒子を貯蔵して供給する貯蔵タンク３６と、固体粒子供給量調整器３７とを備えている。   4 to 7, the blasting device 30 stores and supplies an injection processing chamber 31, a conveyor device 32, an injection unit 33, a compressor 34, a pressure regulator 35, and solid particles. A tank 36 and a solid particle supply amount regulator 37 are provided.

コンベア装置３２は一対のホイール３８，３９と、両ホイール３８，３９間に掛渡したエンドレスのベルト状体４０と、テンションロール４１，４２と、前記ホイール３８を回転駆動するモータ４３とを備えている。コンベア装置３２は、前記モータ４３を稼動し、前記ベルト状体４０を前記加工室３１内の略中央部を通過させてエンドレスに適当な速度で回動するように構成されている。前記回動速度は調整可能になっている。   The conveyor device 32 includes a pair of wheels 38 and 39, an endless belt-like body 40 that spans between the wheels 38 and 39, tension rolls 41 and 42, and a motor 43 that rotationally drives the wheel 38. Yes. The conveyor device 32 is configured to operate the motor 43 and rotate the belt-like body 40 at an appropriate speed endlessly through the substantially central portion in the processing chamber 31. The rotation speed can be adjusted.

前記ベルト状体４０の表面部には、前記中途加工針９を支持させる多数の支持部材４４…４４が等間隔を存して固定して配設されている。前記各支持部材４４の略中央部には、中途加工針９の基端部（針基部４）を嵌合する嵌合孔４５が、ベルト状体４０の方向に向けて設けてある。これにより、中途加工針９の針基部４を、噴射加工室３１の入口４６側における室３１外に位置する支持部材４４の前記孔４５に嵌合することにより、前記針は略鉛直の姿勢で支持され、その姿勢を保持して加工室３１へ移送され、加工室３１内を通過するようになっている。
前記針９の針基部４を支持部材４４の嵌合孔４５へ嵌合する作業は手作業により行うこともできるが、自動供給装置を設けて針９の孔４５への嵌合作業を自動化することも可能である。 On the surface of the belt-like body 40, a large number of support members 44... A fitting hole 45 for fitting the proximal end portion (needle base portion 4) of the halfway machining needle 9 is provided in the substantially central portion of each support member 44 toward the belt-like body 40. Thus, the needle base 4 of the midway processing needle 9 is fitted into the hole 45 of the support member 44 located outside the chamber 31 on the inlet 46 side of the injection processing chamber 31, so that the needle has a substantially vertical posture. It is supported, transferred to the processing chamber 31 while maintaining its posture, and passes through the processing chamber 31.
Although the operation of fitting the needle base 4 of the needle 9 into the fitting hole 45 of the support member 44 can be performed manually, an automatic supply device is provided to automate the fitting operation of the needle 9 into the hole 45. It is also possible.

コンベア装置３２の一方のホイール３８（加工室の出口４７側のホイール３８）の近傍には、針抜き取り用ロール４８が設けてある。このロール４８は後述するように、加工室３１内でブラスト加工された針（ブラスト加工針１０）を支持部材４４から抜き出すために設けたものである。
図示の針抜き取り用ロール４８は、図７に最も詳細に示すように、適当な間隔（針１０の太さに対応する間隔）を存して相対設した一対のロール４８ａ，４８ｂを備えている。両ロール４８ａ，４８ｂは所定の方向（針１０に対して嵌合孔４５から抜き取る方向へ摩擦力を付与させる方向）へ回転させるように構成してある。前記両ロール４８ａ，４８ｂは、例えばゴム材やスポンジ材等の弾性材で構成されている。なお、ブラシ材で構成してもよい。これにより，加工室３１内でブラスト加工されたブラスト加工針１０は前記ロール４８の位置に達すると、両ロール４８ａ，４８ｂ間に挾入され、両ロール４８ａ，４８ｂとの回転摩擦力により嵌合孔４５から強制的に抜き取られて落下し、容器４９内に捕集される（図５参照）。 In the vicinity of one wheel 38 of the conveyor device 32 (the wheel 38 on the outlet 47 side of the processing chamber), a needle removal roll 48 is provided. As will be described later, the roll 48 is provided for extracting the blasted needle (blasted needle 10) from the support member 44 in the processing chamber 31.
The needle removal roll 48 shown in the figure includes a pair of rolls 48a and 48b which are disposed relative to each other with an appropriate interval (interval corresponding to the thickness of the needle 10) as shown in FIG. . Both rolls 48a and 48b are configured to rotate in a predetermined direction (a direction in which a frictional force is applied to the needle 10 in a direction of being extracted from the fitting hole 45). Both the rolls 48a and 48b are made of an elastic material such as a rubber material or a sponge material, for example. In addition, you may comprise with a brush material. Thus, when the blasting needle 10 blasted in the processing chamber 31 reaches the position of the roll 48, it is inserted between the rolls 48a and 48b and is fitted by the rotational frictional force between the rolls 48a and 48b. It is forcibly extracted from the hole 45 and dropped and collected in the container 49 (see FIG. 5).

前記噴射部３３は噴射加工室３１に設けてある。図示の形態では、図４に詳細に示すように、噴射部３３を４個設け、四方向から加工室３１内の中央部に向けて固体粒子を噴射するように構成してある。前記４個の噴射部３３は略正方形の対角部に位置させ、連結杆５０で連結して配設され、昇降手段５１により上下方向に位置を調整可能に構成してある。前記各噴射部３３は、図６に詳細に示すように、上下方向に適当な間隔を存すると共に、噴射出口を水平方向に向けて配設した複数本（図示では３本）の噴射ノズル３３ａを備えている。上記構成により、固体粒子は加工室３１内の略中央部に向け、四方向から噴射させるようになっている。   The injection unit 33 is provided in the injection processing chamber 31. In the illustrated form, as shown in detail in FIG. 4, four injection parts 33 are provided, and solid particles are injected from the four directions toward the central part in the processing chamber 31. The four injection parts 33 are positioned at diagonally square portions and are connected by a connecting rod 50, and are configured to be adjustable in the vertical direction by the lifting means 51. As shown in detail in FIG. 6, each of the injection units 33 includes a plurality of (three in the drawing) injection nozzles 33 a having appropriate intervals in the vertical direction and arranged with the injection outlets directed in the horizontal direction. I have. With the above configuration, the solid particles are jetted from four directions toward the substantially central portion in the processing chamber 31.

前記コンプレッサー３４は圧力調整器３５を介して管路により前記各噴射部３３に接続され、圧力空気を前記各ノズル３３ａから噴射するように構成してある。噴射する空気の圧力値は前記調整器３５で調整できる。   The compressor 34 is connected to each injection unit 33 by a pipe line via a pressure regulator 35, and is configured to inject pressurized air from each nozzle 33a. The pressure value of the injected air can be adjusted by the adjuster 35.

前記タンク３６は、前記固体粒子供給量調整器３７を介して管路により前記各噴射部３３に接続されている。固体粒子は前記タンク３６内に貯蔵され、各噴射部３３へ供給される。これにより、コンプレッサー３４を稼動すると、圧力空気は各ノズル３３ａから噴射されるが、この圧力空気とともに各ノズル３３ａから固体粒子も噴射される。即ち、コンプレッサー３４を稼動すると、タンク３６内に貯蔵されている固体粒子は各ノズル３３ａから所定の噴射速度で加工室３１内の略中央部へ向けて噴射される。   The tank 36 is connected to each injection unit 33 by a pipe line via the solid particle supply amount regulator 37. Solid particles are stored in the tank 36 and supplied to the injection units 33. Thus, when the compressor 34 is operated, the pressure air is injected from each nozzle 33a, and solid particles are also injected from each nozzle 33a together with this pressure air. That is, when the compressor 34 is operated, the solid particles stored in the tank 36 are ejected from each nozzle 33a toward the substantially central portion in the processing chamber 31 at a predetermined ejection speed.

そこで、コンベア装置３２を駆動し、中途加工針９を各支持部材４４の嵌合孔４５へ順次嵌合して支持させると共にコンプレッサー３４を稼動すると、中途加工針９は所定の速度で移送されて加工室３１の入口４６側から室３１内に入り、所定の位置（室３１内の略中央部）に達した時点でブラスト処理加工される。即ち、中途加工針９が室３１内の略中央部に達すると、前記針９に対して四方向から固体粒子が噴射されるので、固体粒子の衝突部位（図示では、針９の針基部４以外の略全体）には多数の微小な凹部５ａが梨地状に形成され、各凹部５ａ間は凸部５ｂになる。なお、図４及び図６において、５２は前記各ノズル３３ａから噴射された固体粒子の噴射流を示す。また、図６において、５３は加工室３１の下端部に形成した出口で、出口５３はシュータで構成され、固体粒子は出口５３から室外に排出され、捕集される。   Therefore, when the conveyor device 32 is driven and the midway processing needles 9 are sequentially fitted and supported in the fitting holes 45 of the respective support members 44 and the compressor 34 is operated, the midway processing needles 9 are transferred at a predetermined speed. Blasting processing is performed when entering the chamber 31 from the inlet 46 side of the processing chamber 31 and reaching a predetermined position (substantially central portion in the chamber 31). That is, when the midway processing needle 9 reaches a substantially central portion in the chamber 31, solid particles are ejected from the four directions onto the needle 9, so that a solid particle collision site (in the drawing, the needle base 4 of the needle 9 is shown). A large number of minute recesses 5a are formed in a satin-like shape on the substantially whole) except for the gaps between the recesses 5a. In FIGS. 4 and 6, reference numeral 52 denotes an injection flow of solid particles injected from each nozzle 33a. In FIG. 6, 53 is an outlet formed at the lower end of the processing chamber 31, and the outlet 53 is constituted by a shooter. Solid particles are discharged from the outlet 53 to the outside and collected.

上記のように、中途加工針９は加工室３１内でブラスト加工による凹凸部５が形成され、上述したブラスト加工針１０となって出口４７側から室３１外に送り出され、前記ブラスト加工針１０は針抜き取り用ロール４８によって嵌合孔４５から抜き取られて落下し、容器４９内に捕集される。   As described above, the concavo-convex portion 5 is formed in the processing chamber 31 by the blast processing in the midway processing needle 9, and becomes the blast processing needle 10 described above, and is sent out of the chamber 31 from the outlet 47 side. Is extracted from the fitting hole 45 by the needle pulling roll 48 and dropped and collected in the container 49.

図示のブラスト加工装置３０は、コンベア装置３２のベルト状体４０を連続的に回動するように構成した場合について説明したが、ベルト状体４０を間欠的（例えば、数秒単位でＯＮ・ＯＦＦ）に回動させるように設定し、ベルト状体４０（したがって、中途加工針９）の停止状態で中途加工針９に対してブラスト加工処理を行なうように構成してもよい。   Although the illustrated blasting apparatus 30 has been described so that the belt-like body 40 of the conveyor device 32 is continuously rotated, the belt-like body 40 is intermittent (for example, ON / OFF in units of several seconds). The belt-like body 40 (and thus the halfway machining needle 9) may be configured to perform the blasting process on the halfway machining needle 9 in a stopped state.

なお、ブラスト加工装置は一例として開示したもので、中途加工針９を噴射加工室３１内に直接入れ、この状態でブラスト処理するように構成し、或いは、その他の任意の構成のブラスト加工装置を採用できること勿論である。   The blasting apparatus is disclosed as an example, and the intermediate processing needle 9 is directly placed in the injection processing chamber 31 and configured to perform blasting in this state, or a blasting apparatus having any other configuration is provided. Of course, it can be adopted.

図８は本発明の他の実施の形態（実施の形態２）の縫合針の要部を示す平面図である。この縫合針において、実施の形態１で既に説明した構成と共通する構成部分等には同一符号を付し、説明を省略する。実施の形態２は針先部３の先端部の構成に特徴がある。   FIG. 8 is a plan view showing a main part of a suturing needle according to another embodiment (Embodiment 2) of the present invention. In this suture needle, the same reference numerals are given to the same components as those already described in the first embodiment, and the description thereof will be omitted. The second embodiment is characterized in the configuration of the distal end portion of the needle tip portion 3.

即ち、実施の形態２は実施の形態１の縫合針において、針本体１の針先部３の先端部１３ａのみを研磨して鏡面状に仕上げ処理したものである。
前記鏡面状に仕上げる方法は、バフ研磨、電解研磨、或いは化学研磨等の中から選択した仕上げ方法を採用することができる。また、前記仕上げ処理は、例えば上述したブラスト加工針１０の針先部３の先端部を上記例示した方法により研磨処理して行うことができる。なお、上記仕上げ研磨する先端部１３ａの長さは、例えばテーパ部１２で構成した針先部３の長さの約５％〜約３０％程度に形成することができる。他の構成は実施の形態１と同様である。 That is, the second embodiment is obtained by polishing only the distal end portion 13a of the needle tip portion 3 of the needle body 1 and finishing it into a mirror surface in the suture needle of the first embodiment.
As the method for finishing the mirror surface, a finishing method selected from buffing, electrolytic polishing, chemical polishing and the like can be employed. Moreover, the said finishing process can be performed by grind | polishing the front-end | tip part of the needle tip part 3 of the blasting needle | hook 10 mentioned above by the method illustrated above, for example. It should be noted that the length of the tip portion 13a to be finished and polished can be formed to be about 5% to about 30% of the length of the needle tip portion 3 constituted by the tapered portion 12, for example. Other configurations are the same as those of the first embodiment.

実施の形態２の縫合針は上記のように構成したもので、この縫合針は実施の形態１の縫合針と同様の作用効果を奏する。   The suturing needle of the second embodiment is configured as described above, and this suturing needle has the same operational effects as the suturing needle of the first embodiment.

図９は本発明のさらに他の実施の形態（実施の形態３）を示す図であって、同図（ａ）は縫合針の要部を示す平面図、同図（ｂ）は同図（ａ）の左側面図である。この縫合針において、実施の形態１で既に説明した構成と共通する構成部分等には同一符号を付して説明は省略する。実施の形態３の縫合針も針先部３の先端部の構成に特徴がある。   FIG. 9 is a view showing still another embodiment (Embodiment 3) of the present invention, in which FIG. 9 (a) is a plan view showing the main part of the suture needle, and FIG. It is a left view of a). In this suture needle, the same reference numerals are given to the same components as those already described in the first embodiment, and description thereof will be omitted. The suture needle according to the third embodiment is also characterized by the configuration of the distal end portion of the needle tip portion 3.

即ち、実施の形態２は実施の形態１の縫合針において、針本体１の針先部３の先端部１３ｂのみを角錐（図示では四角錐）に形成したものである。前記角錐は、例えば上述したブラスト加工針１０の針先部３の先端を研削する等により形成する方法を採用することができる。また、前記角錐部の各稜線１４のうち、任意の稜線１４は切刃に形成されている。なお、角錐に形成した先端部１３ｂの長さは、前記先端部１３ａと同様に、テーパ部１２で構成した針先部３の長さの約５％〜約３０％程度に形成することができる。他の構成は実施の形態１と同様である。   That is, Embodiment 2 is the suture needle of Embodiment 1 in which only the distal end portion 13b of the needle tip portion 3 of the needle body 1 is formed into a pyramid (in the drawing, a quadrangular pyramid). The pyramid can be formed by, for example, grinding the tip of the needle tip 3 of the blasting needle 10 described above. Moreover, arbitrary ridgelines 14 are formed in the cutting edge among each ridgelines 14 of the said pyramid part. In addition, the length of the tip portion 13b formed in the pyramid can be formed to be about 5% to about 30% of the length of the needle tip portion 3 formed of the tapered portion 12 like the tip portion 13a. . Other configurations are the same as those in the first embodiment.

実施の形態３の縫合針は上記のように構成したもので、この縫合針を生体組織に刺入すると、切刃が形成されている稜線により組織を切り開き、刺入当初の刺通抵抗を低減する。他の作用効果は実施の形態１と同様である。   The suturing needle according to the third embodiment is configured as described above. When the suturing needle is inserted into a living tissue, the tissue is opened by a ridge line where a cutting edge is formed, and the piercing resistance at the beginning of the insertion is reduced. To do. Other functions and effects are the same as those of the first embodiment.

図１０は本発明のさらに他の実施の形態（実施の形態４）を示す図であって、同図（ａ）は縫合針の要部を示す斜視図、同図（ｂ）は同図（ａ）のＢ−Ｂ線断面図、同図（ｃ）は同図（ａ）のＣ−Ｃ線断面図、同図（ｄ）は同図（ａ）のＤ−Ｄ線断面図である。この実施の形態において実施の形態１で既に説明した構成と共通する構成部分等には同一符号を付して説明は省略する。   FIG. 10 is a view showing still another embodiment (Embodiment 4) of the present invention, in which FIG. 10 (a) is a perspective view showing the main part of the suture needle, and FIG. 4A is a cross-sectional view taken along line B-B in FIG. 3A, FIG. 2C is a cross-sectional view taken along line C-C in FIG. 1A, and FIG. In this embodiment, the same components as those already described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

実施の形態４の縫合針は針本体１の針先部３Ａを多角形断面（図示では三角形断面）に形成された角針で構成されている。三角形断面に形成された針先部３Ａは各面（三つの面）が先端１３に向けて徐々に巾が狭くなり、先端で交わっている。
実施の形態４の縫合針は、針本体１の胴部２の一部も三角形断面に形成され、針先部３Ａは胴部２に延設されている。前記針先部３Ａの三つの稜線１５，１６，１７のうち、任意の稜線（図示では稜線１５及び１６）には切刃１８，１８が形成されている。 The suturing needle of the fourth embodiment is constituted by a square needle having a needle tip portion 3A of the needle body 1 formed in a polygonal cross section (a triangular cross section in the figure). Each surface (three surfaces) of the needle tip portion 3A formed in a triangular cross section gradually decreases in width toward the tip 13, and intersects at the tip.
In the suture needle of the fourth embodiment, a part of the body part 2 of the needle body 1 is also formed in a triangular cross section, and the needle tip part 3 </ b> A extends to the body part 2. Of the three ridge lines 15, 16, and 17 of the needle tip portion 3A, cutting edges 18 and 18 are formed on arbitrary ridge lines (the ridge lines 15 and 16 in the drawing).

前記切刃１８は、例えば針先部３Ａの三つの面の面のうち、一つの面１９を研削する等により形成することができる。実施の形態４の縫合針は、ブラスト加工により形成された凹凸部５が針本体１の胴部２の略全体及び針先部３Ａの一部に施されている。針先部３Ａの前記切刃１８を形成するために研削等を施した前記一つの面１９の先端１３近く側及び他の二つの面の先端１３側には前記凹凸部５が形成されていない。他の構成は実施の形態１と同様である。   The cutting edge 18 can be formed by, for example, grinding one surface 19 among the three surfaces of the needle tip portion 3A. In the suturing needle according to the fourth embodiment, the concavo-convex portion 5 formed by blasting is applied to substantially the entire body portion 2 of the needle body 1 and a part of the needle tip portion 3A. The concavo-convex portion 5 is not formed on the side near the tip 13 of the one surface 19 and the tip 13 side of the other two surfaces subjected to grinding or the like to form the cutting edge 18 of the needle tip portion 3A. . Other configurations are the same as those in the first embodiment.

実施の形態４の縫合針は上記のように構成したもので、この縫合針を生体組織に刺入すると、切刃１８が形成されている稜線１５，１６により組織を切り開き、これにより刺通抵抗を低減する。その後は凹凸部５により実施の形態１と同様に作用し、効果を奏する。   The suture needle according to the fourth embodiment is configured as described above. When this suture needle is inserted into a living tissue, the tissue is cut by the ridge lines 15 and 16 where the cutting blades 18 are formed, and thereby the puncture resistance. Reduce. After that, the concavo-convex portion 5 acts in the same manner as in the first embodiment, and has an effect.

次に実施の形態４の縫合針の製造方法の一例について図１１を参照して説明する。図１１（ａ）は針材を示す斜視図、同図（ｂ）は針材の一次加工品を示す説明図、同図（ｃ）は同図（ｂ）のＣ−Ｃ線拡大断面図、同図（ｄ）は二次加工品を示す説明図、同図（ｅ）は二次加工品にブラスト加工により形成した凹凸部を施す工程を示す説明図である。   Next, an example of a method for manufacturing the suture needle according to Embodiment 4 will be described with reference to FIG. FIG. 11A is a perspective view showing the needle material, FIG. 11B is an explanatory view showing the primary processed product of the needle material, FIG. 11C is an enlarged sectional view taken along the line CC of FIG. FIG. 4D is an explanatory view showing a secondary processed product, and FIG. 4E is an explanatory view showing a step of applying an uneven portion formed by blasting to the secondary processed product.

縫合針の針材１１は、実施の形態１と同様にステンレス鋼等の丸棒状に形成されている。針材１１の一端は、任意の段階（通常は最初の工程）で、縫合糸６を取付ける糸取付部７（図示せず）を形成する。前記糸取付部７は弾機穴（弾機孔）、ナミ穴（普通穴）、或いは実施の形態１の糸取付穴７ａ等により形成される。   The needle material 11 of the suture needle is formed in a round bar shape such as stainless steel as in the first embodiment. One end of the needle material 11 forms a thread attachment portion 7 (not shown) for attaching the suture thread 6 at an arbitrary stage (usually the first step). The thread attachment portion 7 is formed by a machine hole (a machine hole), a thread hole (normal hole), or the thread attachment hole 7a of the first embodiment.

図１１（ｂ）に示すように、針材１１の先端部側を加工し、三角棒状部２１を形成する。この三角棒状部２１は、例えばエンドレス状のＶ溝を有するプレス成形型（図示せず）のＶ溝内へ針材１１の先端部側を入れ、これを昇降プレス型（図示せず）でプレス加工（一次プレス加工）することにより成形することができる。前記三角棒状部２１は、例えば針材１１の長さの約１／２〜約１／３程度の範囲で形成するとよい。上記工程により得られた加工品を「一次加工品２２」という。   As shown in FIG. 11B, the tip end side of the needle material 11 is processed to form a triangular bar-shaped portion 21. For example, the triangular bar 21 is inserted into the V groove of a press mold (not shown) having an endless V groove, and the tip of the needle material 11 is pressed by an elevating press die (not shown). It can be formed by processing (primary press processing). The triangular bar portion 21 may be formed, for example, in a range of about 1/2 to about 1/3 of the length of the needle material 11. The processed product obtained by the above process is referred to as “primary processed product 22”.

次に図１１（ｄ）に示すように、一次加工品２２の三角棒状部２１の先端側に先細三角形状の針先部形成部２３を形成する。この先細三角形状の針先部形成部２３は、例えば、先端に向けて徐々に巾が細く、かつ、溝が浅くなったＶ溝を有するプレス成形型（図示せず）を用い、三角棒状部２１の先端部をＶ溝に合致させて入れ、これを昇降プレス型（図示せず）でプレス加工（二次プレス加工）することにより成形できる。この場合において、前記二次プレス加工により、針先部形成部２３の縁部にバリが形成されていたときは、バリを研削その他の手段により切除する。上記工程により得られた加工品を二次加工品２４という。   Next, as shown in FIG. 11 (d), a tapered triangular needle tip portion forming portion 23 is formed on the distal end side of the triangular bar portion 21 of the primary processed product 22. The tapered triangular needle tip portion forming portion 23 uses, for example, a press forming die (not shown) having a V-groove gradually narrowing toward the tip and having a shallow groove. It can be formed by putting the tip of 21 in alignment with the V-groove and pressing it (secondary pressing) with a lifting press die (not shown). In this case, if burrs are formed at the edge of the needle tip forming portion 23 by the secondary pressing, the burrs are cut off by grinding or other means. The processed product obtained by the above process is referred to as a secondary processed product 24.

次いで、二次加工品２４を前記ブラスト加工装置３０によって、ブラスト処理し、図１１（ｅ）に示すように、二次加工品２４の針先部形成部２３の先端から針基部４の近くまでの全域にわたりブラスト加工により形成した微小な無数の（梨地状の）の凹凸部５を施す。上記工程により得られた加工品をブラスト加工針２５という。   Next, the secondary processed product 24 is blasted by the blast processing device 30, and as shown in FIG. 11 (e), from the tip of the needle tip portion forming portion 23 of the secondary processed product 24 to the vicinity of the needle base portion 4. An infinite number of minute (satin-like) concavo-convex portions 5 formed by blasting are applied over the entire area. The processed product obtained by the above process is called a blasting needle 25.

次いで、ブラスト加工針２５の針先部形成部２３の三つの面のうち、一つの面（前記面１９に相当する面）を研削し、稜線１５，１６を切刃１８に形成した針先部３Ａを形成する。次いで、ブラスト加工針２５を実施形態１と同様の処理工程を含んで縫合針を得る。   Next, among the three surfaces of the needle tip portion forming portion 23 of the blasting needle 25, one surface (the surface corresponding to the surface 19) is ground and the ridge lines 15 and 16 are formed on the cutting edge 18. 3A is formed. Next, the blasting needle 25 includes processing steps similar to those of the first embodiment to obtain a suture needle.

なお、上述した各実施の形態では、ブラスト加工した後に、実施の形態１では刺入先端（又は鈍点）を、実施の形態２では研磨仕上げた先端部を、実施の形態３では角錐を、また、実施の形態４では切刃を形成した例を開示したが、これらの作業工程は逆にすることも可能である。この場合には、針先部の所定の部位をスポンジ材やゴム材等の弾性材等を用いてカバーして保護し、その状態でブラスト処理加工を行うとよい。
また、実施の形態では主に弯曲針で構成した縫合針を開示したが、本発明は弯曲針に限定されるものではない。例えば、直針、または針本体の全長の約半分（針先部側）のみを弯曲した縫合針（先曲針）、或いはジモン氏針や兎唇用縫合針のようにフック針状に弯曲した縫合針その他の縫合針にも適応できるものである。 In each of the above-described embodiments, after blasting, the insertion tip (or blunt point) in the first embodiment, the polished tip in the second embodiment, the pyramid in the third embodiment, Moreover, although the example which formed the cutting blade was disclosed in Embodiment 4, these work processes can also be reversed. In this case, it is preferable to cover and protect a predetermined portion of the needle tip portion with an elastic material such as a sponge material or a rubber material, and perform the blasting process in that state.
Moreover, although the suture needle mainly composed of a curved needle has been disclosed in the embodiments, the present invention is not limited to the curved needle. For example, a straight needle, or a suture needle (curved needle) that is bent only about half of the entire length of the needle body (needle tip side), or a suture that is bent like a hook needle like a Jimmon needle or labial suture needle It can also be applied to needles and other suture needles.

さらにまた、上記した縫合針は本発明の実施の形態の一例として開示したもので、本発明は上記実施の形態に限定されるものではない。   Furthermore, the above-described suture needle is disclosed as an example of the embodiment of the present invention, and the present invention is not limited to the above-described embodiment.

本発明の縫合針の一実施の形態を示すものであって、同図（ａ）は側面図、同図（ｂ）は針本体を直線状に伸展した状態の一部を拡大して示す平面図、同図（ｃ）は同図（ｂ）のＡ−Ａ線拡大断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a suturing needle of the present invention, where FIG. 1 (a) is a side view, and FIG. 1 (b) is an enlarged plan view showing a part of a needle body that is linearly extended. The figure and the figure (c) are the AA line expanded sectional views of the figure (b). 図１の縫合針におけるブラスト加工によって形成された凹凸部を説明するために一部を拡大して示す説明図である。It is explanatory drawing which expands and shows a part in order to demonstrate the uneven | corrugated | grooved part formed by the blast process in the suture needle | hook of FIG. 図１の縫合針の製造工程を概略的に示す説明図であって、同図（ａ）は針材を示す斜視図、同図（ｂ）は針材の一端に糸取付部（糸取付穴）を、また、他端側に針先部を形成する工程を示す説明図、同図（ｃ）は針本体にブラスト加工により形成された凹凸部を形成する工程を示す説明図である。It is explanatory drawing which shows the manufacturing process of the suture needle | hook of FIG. 1 schematically, Comprising: The figure (a) is a perspective view which shows a needle material, The figure (b) is a thread | yarn attachment part (thread attachment hole) in the end of a needle | hook material. ), And an explanatory view showing a step of forming a needle tip portion on the other end side, and FIG. 10 (c) is an explanatory view showing a step of forming an uneven portion formed by blasting on the needle body. 本発明に使用するブラスト加工装置の全体構成の概要を示す平面図である。It is a top view which shows the outline | summary of the whole structure of the blast processing apparatus used for this invention. 同上加工装置を側面図から見た説明図である。It is explanatory drawing which looked at the processing apparatus same as the above from the side view. 図５のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 同上加工装置に設けた抜き取り用ロールの部分を拡大して示す説明図である。It is explanatory drawing which expands and shows the part of the extraction roll provided in the processing apparatus same as the above. 本発明の他の実施の形態の縫合針の要部を示す平面図である。It is a top view which shows the principal part of the suturing needle of other embodiment of this invention. 本発明のさらに他の実施の形態を示す図であって、同図（ａ）は縫合針の要部を示す平面図、同図（ｂ）は同図（ａ）の左側面図である。It is a figure which shows other embodiment of this invention, Comprising: The figure (a) is a top view which shows the principal part of a suture needle | hook, The figure (b) is a left view of the figure (a). 本発明のさらに他の実施の形態を示す図であって、同図（ａ）は縫合針の要部を示す斜視図、同図（ｂ）は同図（ａ）のＢ−Ｂ線断面図、同図（ｃ）は同図（ａ）のＣ−Ｃ線断面図、同図（ｄ）は同図（ａ）のＤ−Ｄ線断面図である。It is a figure which shows other embodiment of this invention, Comprising: The figure (a) is a perspective view which shows the principal part of a suture needle, The figure (b) is the BB sectional drawing of the figure (a). FIG. 4C is a cross-sectional view taken along the line CC of FIG. 1A, and FIG. 4D is a cross-sectional view taken along the line DD of FIG. 図１０の縫合針の製造方法の一例を示す説明図であって、同図（ａ）は針材を示す斜視図、同図（ｂ）は一次加工品を示す説明図、同図（ｃ）は同図（ａ）のＣ−Ｃ線断面図、同図（ｄ）は二次加工品を示す説明図、同図（ｃ）は二次加工品にブラスト加工により形成した凹凸部を施す工程を示す説明図である。It is explanatory drawing which shows an example of the manufacturing method of the suture needle | hook of FIG. 10, Comprising: The figure (a) is a perspective view which shows a needle material, The figure (b) is explanatory drawing which shows a primary processed product, The figure (c). Fig. 4C is a sectional view taken along the line C-C in Fig. 4A, Fig. 4D is an explanatory view showing a secondary processed product, and Fig. 3C is a process of applying an uneven portion formed by blasting to the secondary processed product. It is explanatory drawing which shows.

符号の説明Explanation of symbols

１ 針本体
２ 胴部
３ 針先部
４ 針基部
５ 凹凸部
７ 糸取付部
1 Needle body 2 Body 3 Needle tip 4 Needle base 5 Uneven portion 7 Thread attachment portion

Claims (7)

針本体の胴部の一端側に形成された針先部と、前記胴部の他端側に形成され、糸取付部を有する針基部とを備えた縫合針であって、
前記針本体の少なくとも前記針先部の少なくとも一部に、ブラスト加工により形成された凹凸部を有してなることを特徴とする、
縫合針。 A suture needle comprising a needle tip portion formed on one end side of the body portion of the needle body and a needle base portion formed on the other end side of the body portion and having a thread attachment portion;
At least a part of the needle tip part of the needle body has an uneven part formed by blasting,
Suture needle. 針先部がテーパー部で形成された丸針であることを特徴とする、請求項１に記載の縫合針。   The suture needle according to claim 1, wherein the needle tip portion is a round needle formed with a tapered portion. 針先部の先端が鈍点に形成された鈍針で構成されていることを特徴とする、請求項１又は２に記載の縫合針。   The suturing needle according to claim 1 or 2, wherein the needle tip portion is constituted by a blunt needle formed at a blunt point. 針先部の先端に刺入尖端を備えていることを特徴とする、請求項１又は２に記載の縫合針。   The suture needle according to claim 1 or 2, wherein a needle tip is provided at the tip of the needle tip. 針先部に研磨仕上げした先端部を備えていることを特徴とする、請求項１又は２に記載の縫合針。   The suture needle according to claim 1 or 2, wherein the needle tip portion is provided with a polished tip. 針先部に角錐に形成された先端部を備えていることを特徴とする、請求項１又は２に記載の縫合針。   The suture needle according to claim 1 or 2, further comprising a tip portion formed in a pyramid at a needle tip portion. 針先部が切刃を有する三角形その他の多角形断面に形成された角針であることを特徴とする、請求項１に記載の縫合針。
The suture needle according to claim 1, wherein the needle tip is a square needle formed in a triangular or other polygonal cross section having a cutting edge.
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Cited By (12)

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JP2008168117A (en) * 2006-12-12 2008-07-24 Akiyama Seisakusho:Kk Suturing needle, and manufacturing method for suturing needle
JP2009050415A (en) * 2007-08-27 2009-03-12 Manii Kk Medical suture needle
JP2009078106A (en) * 2006-10-10 2009-04-16 Akiyama Seisakusho:Kk Suture needle, and method for manufacturing suture needle
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WO2009084436A1 (en) * 2007-12-28 2009-07-09 Mani, Inc. Suture needle and method of producing the same
FR2949661A1 (en) * 2009-09-04 2011-03-11 Suturex & Renodex Surgical needle for suturing tissues of patient during aesthetic surgical interventions, has common edge presenting constant radius of curvature at level of main body and decreased radius of curvature at level of incision part til pin
WO2011081100A1 (en) * 2009-12-28 2011-07-07 ケイセイ医科工業株式会社 Suture needle
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JP2009078106A (en) * 2006-10-10 2009-04-16 Akiyama Seisakusho:Kk Suture needle, and method for manufacturing suture needle
JP2008168117A (en) * 2006-12-12 2008-07-24 Akiyama Seisakusho:Kk Suturing needle, and manufacturing method for suturing needle
JP2009050415A (en) * 2007-08-27 2009-03-12 Manii Kk Medical suture needle
JP2009100969A (en) * 2007-10-24 2009-05-14 Akiyama Seisakusho:Kk Suture needle and manufacturing method of suture needle
WO2009084436A1 (en) * 2007-12-28 2009-07-09 Mani, Inc. Suture needle and method of producing the same
JP2009160006A (en) * 2007-12-28 2009-07-23 Manii Kk Suture needle and its manufacturing method
EP2151198A3 (en) * 2008-08-07 2013-06-12 Covidien LP Surgical needle with reduced contact area
FR2949661A1 (en) * 2009-09-04 2011-03-11 Suturex & Renodex Surgical needle for suturing tissues of patient during aesthetic surgical interventions, has common edge presenting constant radius of curvature at level of main body and decreased radius of curvature at level of incision part til pin
JP2011136087A (en) * 2009-12-28 2011-07-14 Keisei Ika Kogyo Kk Suture needle
CN102686168A (en) * 2009-12-28 2012-09-19 凯塞医疗工业株式会社 Suture needle
WO2011081100A1 (en) * 2009-12-28 2011-07-07 ケイセイ医科工業株式会社 Suture needle
WO2011105541A1 (en) * 2010-02-25 2011-09-01 マニー株式会社 Surgical knife and manufacturing method thereof
JP2011172786A (en) * 2010-02-25 2011-09-08 Manii Kk Cutters for surgery, manufacturing method thereof
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JP2012148066A (en) * 2010-12-28 2012-08-09 Keisei Ika Kogyo Kk Suture needle
WO2013073609A1 (en) 2011-11-15 2013-05-23 Suzuki Naoki Surgical instrument
WO2022056216A1 (en) * 2020-09-10 2022-03-17 Ergosurgical Group Corp. Curved suture needles having a non-smooth profile

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